iRule to drop HTTP GET requests that don't have zero content length header

Thanks Kevin!!!

So does this look like the right way to implement it?

when HTTP_REQUEST { if { ( [HTTP::method] equals "GET" ) and ( [HTTP::header exists Content-Length] ) and ( [HTTP::header Content-Length] == 0 ) } or { not ( [HTTP::header exists Content-Length] ) } do nothing } else { reject } }